I have a Mobile / Web protoipo I created a few days of a restaurant application (fast food) which offers to the User a way to be able to sell their products (edible) homemade or industrialized. the difference between this prototype is that it indicates to the User to buy some food, more services next, who will perform the entraga, how much it costs and how long it will be delivered.
I believe that this solution can be adapted and improved to your needs.